Analisis D-Dimer, Fibrinogen, dan Karakteristik Luaran Pasien Trombosis Vena Dalam di Rumah Sakit Cipto Mangunkusumo Sebelum dan Selama Pandemi COVID-19 = Analysis of D-Dimer, Fibrinogen, and Outcome Characteristics of Deep Vein Thrombosis Patients at Cipto Mangunkusumo Hospital Before and During the COVID-19 Pandemic